Not sure about 30D...since I am not a canon user, but . ]- p2 ~: H- J ' p& U! I- r* F) D4 r: fFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu...: h% s1 P9 q" G) z
' Z; `+ {. ], }7 P/ l* Z( m) I; D, KThe shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.